From 38886de0c3e9ea5729ef23e4c653fa2822f52e8f Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Tue, 6 Apr 2021 14:43:39 +0200
Subject: xscreensaver 6.00

---
 jwxyz/jwxyz.m | 42 ++++++++++++++++++++----------------------
 1 file changed, 20 insertions(+), 22 deletions(-)

(limited to 'jwxyz/jwxyz.m')

diff --git a/jwxyz/jwxyz.m b/jwxyz/jwxyz.m
index c6a7af5..d25d580 100644
--- a/jwxyz/jwxyz.m
+++ b/jwxyz/jwxyz.m
@@ -1,4 +1,4 @@
-/* xscreensaver, Copyright (c) 1991-2019 Jamie Zawinski <jwz@jwz.org>
+/* xscreensaver, Copyright (c) 1991-2020 Jamie Zawinski <jwz@jwz.org>
  *
  * Permission to use, copy, modify, distribute, and sell this software and its
  * documentation for any purpose is hereby granted without fee, provided that
@@ -11,13 +11,11 @@
 
 /* JWXYZ Is Not Xlib.
 
-   But it's a bunch of function definitions that bear some resemblance to
-   Xlib and that do Cocoa-ish things that bear some resemblance to the
-   things that Xlib might have done.
+   This file implements Xlib in terms of Quartz / Core Graphics rendering
+   for macOS and iOS.
 
-   This is the original version of jwxyz for MacOS and iOS.
-   The version used by Android is in jwxyz-gl.c and jwxyz-common.c.
-   Both versions depend on jwxyz-cocoa.m.
+   See the comment at the top of jwxyz-common.c for an explanation of
+   the division of labor between these various modules.
  */
 
 #ifdef JWXYZ_QUARTZ // entire file
@@ -26,7 +24,7 @@
 #import <stdint.h>
 #import <wchar.h>
 
-#ifdef USE_IPHONE
+#ifdef HAVE_IPHONE
 # import <UIKit/UIKit.h>
 # import <UIKit/UIScreen.h>
 # import <QuartzCore/QuartzCore.h>
@@ -66,7 +64,7 @@ struct jwxyz_Display {
   Visual visual;
   struct jwxyz_sources_data *timers_data;
 
-# ifndef USE_IPHONE
+# ifndef HAVE_IPHONE
   CGDirectDisplayID cgdpy;  /* ...of the one and only Window, main_window.
                                This can change if the window is dragged to
                                a different screen. */
@@ -399,7 +397,7 @@ jwxyz_window_resized (Display *dpy)
 {
   Window w = dpy->main_window;
 
-# ifndef USE_IPHONE
+# ifndef HAVE_IPHONE
   // Figure out which screen the window is currently on.
   {
     int wx, wy;
@@ -417,7 +415,7 @@ jwxyz_window_resized (Display *dpy)
     }
     Assert (dpy->cgdpy, "unable to find CGDisplay");
   }
-# endif // USE_IPHONE
+# endif // HAVE_IPHONE
 
 /*
   {
@@ -1394,9 +1392,9 @@ jwxyz_draw_NSImage_or_CGImage (Display *dpy, Drawable d,
                                XRectangle *geom_ret, int exif_rotation)
 {
   CGImageRef cgi;
-# ifndef USE_IPHONE
+# ifndef HAVE_IPHONE
   CGImageSourceRef cgsrc;
-# endif // USE_IPHONE
+# endif // HAVE_IPHONE
   NSSize imgr;
 
   CGContextRef cgc = d->cgc;
@@ -1406,7 +1404,7 @@ jwxyz_draw_NSImage_or_CGImage (Display *dpy, Drawable d,
     NSImage *nsimg = (NSImage *) img_arg;
     imgr = [nsimg size];
 
-# ifndef USE_IPHONE
+# ifndef HAVE_IPHONE
     // convert the NSImage to a CGImage via the toll-free-bridging 
     // of NSData and CFData...
     //
@@ -1416,9 +1414,9 @@ jwxyz_draw_NSImage_or_CGImage (Display *dpy, Drawable d,
     CFDataRef cfdata = (CFDataRef) nsdata;
     cgsrc = CGImageSourceCreateWithData (cfdata, NULL);
     cgi = CGImageSourceCreateImageAtIndex (cgsrc, 0, NULL);
-# else  // USE_IPHONE
+# else  // HAVE_IPHONE
     cgi = nsimg.CGImage;
-# endif // USE_IPHONE
+# endif // HAVE_IPHONE
 
   } else {
     cgi = (CGImageRef) img_arg;
@@ -1481,12 +1479,12 @@ jwxyz_draw_NSImage_or_CGImage (Display *dpy, Drawable d,
   CGContextDrawImage (cgc, dst2, cgi);
   CGContextRestoreGState (cgc);
 
-# ifndef USE_IPHONE
+# ifndef HAVE_IPHONE
   if (nsimg_p) {
     CFRelease (cgsrc);
     CGImageRelease (cgi);
   }
-# endif // USE_IPHONE
+# endif // HAVE_IPHONE
 
   if (geom_ret) {
     geom_ret->x = dst.origin.x;
@@ -1507,7 +1505,7 @@ jwxyz_png_to_ximage (Display *dpy, Visual *visual,
                                     [NSData dataWithBytes:png_data
                                             length:data_size]];
   if (! img) return 0;
-#ifndef USE_IPHONE
+#ifndef HAVE_IPHONE
   NSBitmapImageRep *bm = [NSBitmapImageRep
                            imageRepWithData:
                              [NSBitmapImageRep
@@ -1525,7 +1523,7 @@ jwxyz_png_to_ximage (Display *dpy, Visual *visual,
   convert_mode_t mode = (([bm bitmapFormat] & NSAlphaFirstBitmapFormat)
                          ? CONVERT_MODE_ROTATE_MASK
                          : 0);
-#else  // USE_IPHONE
+#else  // HAVE_IPHONE
   CGImageRef cgi = [img CGImage];
   if (!cgi) {
     [img release];
@@ -1547,7 +1545,7 @@ jwxyz_png_to_ximage (Display *dpy, Visual *visual,
 
   convert_mode_t mode = convert_mode_to_rgba (bitmap_info);
 
-#endif // USE_IPHONE
+#endif // HAVE_IPHONE
 
   XImage *image = XCreateImage (dpy, visual, 32, ZPixmap, 0, 0,
                                 width, height, 8, 0);
@@ -1567,7 +1565,7 @@ jwxyz_png_to_ximage (Display *dpy, Visual *visual,
 
   [img release];
 
-#ifndef USE_IPHONE
+#ifndef HAVE_IPHONE
   // [bm release];
 # else
   CGContextRelease (cgc);
-- 
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